{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "The CPF group also exhibited increased levels of dopamine metabolism in the hippocampus and decreased levels of gamma - aminobutyric acid ( GABA ) and glutamate in the striatum compared to the vehicle group ."}
{"Chemical": ["CPF", "dopamine", "gamma - aminobutyric acid", "GABA", "glutamate"]}